What is DotNetFX.exe?

The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the DotNetFX.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.

DotNetFX.exe file information

Description:DotNetFX.exe is not essential for the Windows OS and causes relatively few problems. The DotNetFX.exe file is located in a subfolder of "C:\Documents and Settings" or sometimes in a subfolder of C:\.
Known file sizes on Windows 8/7/XP are 431,024 bytes (33% of all occurrences), 398,800 bytes or 13,179,660 bytes.
The program has no visible window. The file has a digital signature. DotNetFX.exe is not a Windows system file. The process listens for or sends data on open ports to a LAN or the Internet.
Therefore the technical security rating is 51% dangerous.

Important: Some malware camouflages itself as DotNetFX.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the DotNetFX.exe process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.

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Best practices for resolving DotNetFX issues

A clean and tidy computer is the key requirement for avoiding problems with DotNetFX. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off doing a repair of your installation, or in the case of Windows 8, executing the DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the DotNetFX.exe process on your computer, the following programs have proven to be helpful: Security Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.